i get about 320-360 & that's when i run it til the light turns on....the absolute worst i've gotten was 280..pooo

 

I am getting about 19-21 around town with my 05 and it still has under 1000 miles on it, so it *should* only get better from here . I have not done any highway driving yet, but I will be going out of town this coming weekend, so I'll be able to check then. All the guys trying to keep the rev's down and getting poor economy- if you are lugging the car, you are going to get crappy mileage also. I have seen a lot of people with various cars try to drive around town in 5th gear since the RPM's are lower and they end up killing their mileage. In the higher gears and lower speeds- you are making the motor do the work, if you keep the RPM's up a bit (lower gear), the motor isn't working as hard, not boosting as much, etc.

Also- to Taerron- explain why running no cats would hurt a car more than a BOV that makes the ECU dump unburnt fuel into the cats?? Running catless will do no harm to a car and will actually reduce heat helping prolong turbo life and possibly engine life.
Joe

 

Hehe- break in- it was at the track with 230 miles on it and I am currently looking to build motor for it, so that is not an issue lol.

Anyway, odd about the shop not tuning it with no cat, but also- tuning for it isn't what people think it is, it is just general tuning improvements. Running with no cat increases air flow which is picked up by the mass airflow *sensor* and compensated for. If the car "technically" had to be tuned for no cats, it would be running lean from the increased airflow (like on a MAP based car) and would not be leaving black soot on the bumper as you describe . I simply cannot believe the amount of misinformation flowing through these forums. It is a car people, just like every other one out there- it is not some specialized piece of equipment that needs to be recalibrated everytime you change something. Granted, tuning helps- it helps with ANY car to improve performance over stock, but it is not what it is made out to be here.

Oh yeah- your argument about the cats being good because they help the rich state the BOV creates- they help reduce the EMISSIONS of the rich state the BOV creates, the motor still sees the same ungodly rich mixture the BOV creates. The cats do nothing to improve the AF mixture before the exuast.

As for mis-information, this is a different subject so I don't want to get into it here, but you guys are also hanging yourselves on the whole MBC thing- and the argument of why it is bad is also the proof that it isn't .
Joe

 

I can see how *possibly* the increased airflow would lead to increased fuel consumption also, however my experience is "breathing mods" like exhaust, intake, etc. usually lead to better effeciency and economy. I think a lot of people that mod and complain of poor mileage are driving differently due to the mods (like driving to hear your new exhaust, feel the extra boost, etc.). There is a post a few replies up stating better mileage after mods.
Joe

 

Hmm, interesting.. has your driving style changed at all since doing so? I know a lot of people claim better mileage. Who knows .
Joe